A seismometer is used to measure the motion in the ground caused by earthquakes, volcanoes, or explosives.
Reaction toactivation energy biological cells
65 million years, if I remember correctly
<span>The component that nitrogen-fixing bacteria provide and that plants can absorb is soluble nitrates. Since plants cannot directly use nitrogen gas, it must be converted into its soluble form. Plants cannot do this either, but nitrogen-fixing bacteria can. These bacteria convert nitrogen gas into soluble nitrates, such as ammonium, which plants can absorb.</span>
So from what i have understood, <span>males have unlimited sperm and females have limited ovum. That's why, there is a different cost of reproduction for males and females.
Hope this helps !
Photon</span>
